linux-kernel - Re: [PATCH 4/9] mm: use mm_populate() for blocking remap_file

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Message-ID: <CANN689H7nvBhe3eTkT-WxG5ZZ-o8S7Hvr=LzKk=mMSY83OEtDw@mail.gmail.com>
Date:	Mon, 11 Mar 2013 22:01:22 -0700
From:	Michel Lespinasse <walken@...gle.com>
To:	Hillf Danton <dhillf@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Tommi Rantala <tt.rantala@...il.com>,
	Andy Lutomirski <luto@...capital.net>,
	Ingo Molnar <mingo@...nel.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Hugh Dickins <hughd@...gle.com>, Jorn_Engel <joern@...fs.org>,
	Rik van Riel <riel@...hat.com>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/9] mm: use mm_populate() for blocking remap_file_pages()

On Mon, Mar 11, 2013 at 9:23 PM, Hillf Danton <dhillf@...il.com> wrote:
> Is it still necessary to populate mm if bail out due
> to a linear mapping encountered?

Yes. mmap_region() doesn't do it on its own, and we want the emulated
linear case to behave similarly to the true nonlinear case.

-- 
Michel "Walken" Lespinasse
A program is never fully debugged until the last user dies.
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